CN101686203A - Method of managing a network having a plurality of nodes - Google Patents
Method of managing a network having a plurality of nodes Download PDFInfo
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- CN101686203A CN101686203A CN200910205188A CN200910205188A CN101686203A CN 101686203 A CN101686203 A CN 101686203A CN 200910205188 A CN200910205188 A CN 200910205188A CN 200910205188 A CN200910205188 A CN 200910205188A CN 101686203 A CN101686203 A CN 101686203A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/005—Discovery of network devices, e.g. terminals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
- H04W8/24—Transfer of terminal data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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Abstract
Described is a method of managing a network having a plurality of nodes. Each node includes a network control module configured to determine packet routing across the network; a node control module that controls packet routing within the node; and a switching platform control module that controls switching of packets to and from the node. The switching platform control module provides state information via the node and network control modules to each of the other nodes, the state information pertaining to an outbound link of the node.
Description
The application be that June 8, application number in 2005 are 200580027506.0 the applying date, denomination of invention divides an application for the patent application of " the topological sum quality of service management apparatus and the method for communication network ".
Technical field
The present invention relates to communication network, be specifically related to service quality (QoS) management in the communication network.The present invention be more particularly directed to have the network of a plurality of nodes.
Background technology
World wide web (www) generally use and the broad range of Internet service has made the internet service exponential increase.From in real time/business of the application of mission critical and non real-time are applied on the internet basic arrangement and deposit, and internet basic arrangement all provides the service of doing one's best to these two kinds of business.When the Internet traffic was high, the performance of the application of bandwidth/delay-sensitive may deterioration.
Service quality (QoS) is meant the terminal use and uses the performance of being experienced.QoS measures in every way, and depends on the service request of terminal use and application usually.This requirement can be for example relevant for inquiry being provided answer service institute's time spent, the ability of the effectively control of execution distribution cooperation, the acceptable audio quality of voice call that uses IP phone and the gratifying video quality that real-time video presents.
In movable self-organization (ad hoc) wireless network tremendous growth is arranged also, this network includes but not limited to the satellite communication network in commercial and the military communication environment.These mobile radio networks stand the quick variation of network topology and link bandwidth, and this may influence the QoS performance of terminal use and application.
Summary of the invention
In one implementation, the present invention points to the method that a kind of management has the network of a plurality of nodes.First node is to the state of at least one receiving node communication output link, and receiving node is dispatched the transmission at least one of first node and Section Point based on the state of being communicated by letter.
In another was realized, the present invention pointed to a kind of method of constructing self-organizing network.In a plurality of nodes each receives the node/Link State of each other node.Based on the node/Link State of at least one reception, first node and Section Point match and form at least one network link.Each node is kept network topology based on the node/Link State of described pairing and reception.
In another configuration, the present invention points to a kind of network with a plurality of nodes.Each node comprises network control module, and it is configured to determine the grouping route of spanning network.Node control module is controlled the grouping route of this intranodal.Switching platform control module control is gone to and from the switching of the grouping of this node.The switching platform control module provides state information by node and network control module to each of other nodes, and state information is relevant with output (outbound) link of this node.
In another configuration, the present invention points to a kind of machine readable media that uses with the processor with memory.This machine readable media comprises that the network control module of the first node that makes the processor configuration network determines the instruction of the grouping route of spanning network.Comprise that also the node control module that makes processor configuration first node controls the instruction of the grouping route in the first node.This medium also comprises following instruction: the switching platform control module of processor configuration first node is controlled go to and from the switching of the grouping of first node, and provided state information by node control module and network control module to the Section Point of network.State information is relevant with the output link of first node.
Described feature, function and advantage can realize independently in various embodiment of the present invention, perhaps can make up in other embodiments.
Description of drawings
By the detailed description and the accompanying drawings, invention will be more fully understood, in the accompanying drawing:
Fig. 1 is the block diagram of known network protocol stack architecture;
Fig. 2 is the block diagram of the network of a configuration according to the present invention;
Fig. 3 is the block diagram of the node of the network of a configuration according to the present invention; And
Fig. 4 is the block diagram of the network of a configuration according to the present invention.
Embodiment
Description to optimum decision system and method only is exemplary in essence below, in any case and be not intended to limit the present invention, its application or use.Have wire link although various configurations of the present invention in the accompanying drawings are shown as in the middle of node and other networking components, the invention is not restricted to this.Should be appreciated that the diverse network link can be wireless, and can include but not limited to that free space optical (FSO) and/or radio frequency connect.
Can describe various realization of the present invention with reference to known network protocol stack framework, this framework always indicates with Reference numeral 20 in Fig. 1.Network data transmission may be derived from application layer 24, for example, and from distributed application and Email.Presentation layer 28 for example relates to be encrypted between network terminal protocol (networkterminal protocol), deciphers and conversion.Session layer 32 can relate to foundation, keeps and finish network and be connected.Transmitting layer 36 can for example form with grouping and handle relevant.Network layer 40 can relate to the addressing that respectively is grouped into suitable destination.Link layer 44 can be for example relevant with preparation transmission grouping on physical layer 48.Should be appreciated that top protocol stack architecture only is illustrative, and also can describe realization of the present invention with reference to other protocol stack architecture and/or layer.Shall also be noted that the term that uses is illustrative in describing stack 20, and should not be considered to limit any realization of the present invention.
One of network is implemented among Fig. 2 with Reference numeral 100 and always indicates in accordance with the principles of the present invention.In this example, network 100 is self-organizing networks, wherein a plurality of nodes 108, and for example node 108a can intercom mutually to 108d.Node 108 can comprise for example one or more routers.Yet should be appreciated that term " router " only is used for an aspect of description node 108, that is, and the ability of their routing iinformations as described below.Node 108 can comprise other function, for example, may be the application function of node this locality.Node 108 can be as further described below, become with network 100 in another node 108 be linked.
Node 108 can add network 100, perhaps can be with the following self-organizing network of by way of example establishment such as network 100.Node, for example node 108a announces its existence on call wire channel 112, and asks other nodes 108 to send their node/link-state information to node 108a by call wire channel 112.Node/link-state information can comprise, for example, and node location and track, number of links, current pairing state, bit error rate and link bandwidth and take.When node 108a when responsive node receives such information, it finds responsive node thus, comprises for example node 108b, 108c and 108d.Node 108a is based on the pairing tabulation of one or more criterion configuration nodes 108.This criterion can comprise the node/Link State, atmospheric condition, adjacent node 108 of adjacent node position and the position of track and the current topology of track and network 100 with respect to node 108a.
Node 108a communication is used for the request with suitable adjacent node 108 (for example, the node 108b) pairing of tabulating from pairing.If the pairing of being asked is acceptable for node 108b, then can between these two nodes, connect.Can be for example the mode related with the presentation layer 28 of network protocol stack 20, session layer 32 and transmitting layer 36, for example, use transmission control protocol (TCP) to connect.
If the request of pairing is unacceptable for node 108b, then node 108a send be used for the pairing tabulation on another node 108 (for example, node 108c) Pei Dui request, or the like, up to node 108a success and node 108 pairings, till the pairing tabulation of perhaps feasible adjacent node is used up.Can repeat above-mentioned pairing and handle the additional chain circuit of setting up between node 108a and other nodes 108.After successfully matching with adjacent node 108, node 108a can communicate by letter its node/Link State to other nodes 108 in the network 100 via in-band communications for example by multicast.
In a configuration, in-band communications can take place in the following manner.When between node 108a and 108b, connecting as previously mentioned, can the packet (not shown) be sent to node 108b from node 108a by sending scheduler 114 and output link 116.Outside the in-band communications communication that call wire channel 112 is provided outside band.Should be noted that and to keep and do not belong to network 100 but the communicating by letter of node in the scope of call wire channel 112 by call wire channel 112.
Should be noted that and during network operation, for example, to handle as a setting, carry out above-mentioned discovery repeatedly and continuously and handle with pairing.In this configuration, in each node 108, can keep the present node/Link State of all nodes 108 of network 100 unchangeably.Like this, current topology information and node/link-state information can be used each node, thereby each node 108 can be carried out Topology Management as described herein.Each node 108 can be independent of the Topology Management of other nodes execution with respect to network 100, therefore can be with distribution mode supervising the network 100.
As the typical case of each node, illustrate in greater detail node 108a among Fig. 3.Node 108a comprises the node/network controller 200 with a plurality of control modules 204 that can laminated tissue.Node 108a comprises optional service quality (QoS) module 212.Module 212 can be difference service (DiffServ) assembly that for example is associated with the network layer 40 of protocol stack 20, and being used for provides classification with the input grouping according to QoS.Also be envisaged in and use other or the module in addition that is used to provide (for example, providing) QoS in the network 100 based on integrated service (IntServ) model.Yet also conceive the configuration that wherein one or more nodes 108 can not comprise QoS module 212.
Send scheduler 114 (being also referred to as transmission scheduler) as following further described, communicate by letter with node/network controller 200.Send a plurality of output queue (not shown) of scheduler 114 management, its scheduling is used for from the grouping of node 108a transmission in output queue.Entering the situation of dividing into groups for example to comprise as be included in the QoS classification in the packets headers, sending scheduler 114 can classify based on QoS, selects appropriate output queue.
In this configuration, node/network controller 200 comprises three modules 204.Network control module 204a is configured to determine the grouping route of spanning network 100, further describes below this incites somebody to action.Grouping route in the node control module 204b Control Node 108a, and communicate by letter with network control module 204a.Switching platform control module 204c controls to and from the switching of the packet of node 108a, and communicates by letter with node control module 204b.Switching platform control module 204c provides state information by node and network control module 204b and other nodes 108 of 204a each in network 100.State information is relevant with the output link of for example node 108a, for example link 116 (shown in Fig. 2).
Term " laminated tissue " is meant how a module 204 can be controlled in " top-down " mode with respect to another module 204.More particularly, for example, network control module 204a provides control and command information to carry out for module 204b to node control module 204b.In addition, node control module 204b provides control and command information to carry out for module 204c to switching platform control module 204c.How " laminated tissue " can deliver to another module 204 in the mode of " bottom-up " with information if can also refer to a module 204.For example, in this configuration, the switching platform control module 204c provide link-state information to node control module 204b, and node control module 204b provides link-state information to network control module 204a.
Switching platform control module 204c management for example with the various functions of physical layer 48 interfaces of protocol stack 20.Specifically, for example, the various functions that switching platform control module 204c management is associated with very high speediness grouping switching platform.For output grouping, term " very high speediness " can be used to describe content for example moves to node 108a specially from node memory specific output port.For input grouping, " very high speediness " can describe the coupling of one or more hash tables that packets headers generated node 108a.
In a configuration, the network of supporting service quality (QoS) to provide always indicates with Reference numeral 300 in Fig. 4.Network 300 comprises a plurality of nodes 308.Node 308 and the same or analogous element of element shown in Fig. 3 are with the same label of the element shown in Fig. 3.
The business that provides on the output link 304 of node 308a can comprise from peer node 308b and 308c arriving node 308a, going to the business of specific output link 304.The business that provides on the link 304 can also comprise the business on the upper strata 312 (for example, as reference Fig. 1 discusses, being derived from the application that is associated with application layer 24) that is derived from node 308a.The available bandwidth capacity of the business of leaving for the upper strata 312 that is derived from node 308a and by link 304, can be measured as output link 304 for example bandwidth capacity, and arrive node 308a, go to poor between the business of specific output link 304 from peer node 308b and 308c.
The bandwidth capacity of output link 304 (being under the situation of FSO or RF link at link 304 for example) may for example change according to atmosphere and/or topological condition.Therefore, node/network controller 200 of node 308a can be based on the state of output link 304 the signal to noise ratio (snr) characteristic of output link 304 (for example based on), the transfer rate of handoff links 304 is for example guaranteed to carry out data communication with the bit error rate (BER) of expectation by link 304.In addition or alternately, under abundant disadvantageous atmospheric condition, can stop transmission, for example, improve up to situation by link 304.
With reference to as described in Fig. 3,, the state communication of output link 304 is given node and network control module 204b and 204a and the spanning network 300 of node 308a as the front by the switching platform control module 204c of node 308a.Therefore, node 308c receives the information about the link of exporting from node 308a.The transmission scheduler 114 that can the state communication of output link 304 be given node 308c by control module 204a, 204b and the 204c of node 308c.The transmission scheduler 114 of node 308c can be considered above-mentioned dynamic output link characteristic when scheduled transmission (for example, outputing on the link 316 of node 308a from node 308c).The transmission criterion that this scheduling can be derived based on the network control module 204a by node 308c.Therefore, for example, when if node/Link State of node 308a changes during disadvantageous atmospheric condition, node 308c can match with node 308d and form link 320 so, and can may pass through the transmission of link 316 and 304 scheduling before scheduling on the link 320.
In a configuration, the Link State of output link 304 is used for more one of new node 308a and 308c or both QoS-provide assembly 212, provides with the QoS that influences in the network 300.In one implementation, use is historical and instantaneous change about the time average of the bandwidth of output link 304, and for example can point out the network control module 204a of node 308c to determine whether need be as the front with reference to renewal node interconnection and/or network route as described in Fig. 2 and 3.
From top description, be appreciated that and following description manage a realization of the method for network with a plurality of nodes.Node with the state communication of output link to other nodes, and one or more node state schedulings transmission in other nodes based on communication.For example under the situation of severe weather conditions and/or change network usage, " aloft " (on the fly) reschedules transmission in the said method permission.Node send scheduler 114 therefore can use with the status transmission of another node relevant, come scheduled transmission in network control level information available.In addition or alternately, in the configuration of using DiffServ or other providing capabilities to support that QoS provides, can provide based on this information updating is this.
The realization of above-mentioned management apparatus and method can provide the solution of " enough good ", is used for route and the resource management that can determine fast.The network of realizing this approach goes for changing resource situation, keeps the acceptable level of universe network utilization ratio simultaneously.Said apparatus and method allow the node of the point-to-point link (as FSO and/or RF link) of use short transverse to create or add self-organizing infrastructure, for example in dynamic self-organization moves the heterogeneous network environment.Above-mentioned control module has been considered to stride expanding and modularized design of similar communication system use.Said apparatus and method provide extendible approach, move network system in the heterogeneous network environment and each network node with management and control dynamic self-organization.
Although described various preferred embodiments, those skilled in the art will recognize that and under the prerequisite that does not deviate from the present invention's design, to make amendment or modification.Example explanation the present invention, and be not that intention limits it.Therefore, specification and claims should freely be explained, and are only just restricted when being necessary in view of related art.
Claims (11)
1. network with a plurality of nodes, each node comprises:
Network control module is configured to determine the grouping route of spanning network;
Node control module is used to control the grouping route of this intranodal; And
The switching platform control module is used to control and goes to and from the switching of the grouping of this node;
Wherein, the switching platform control module provides state information by node control module and network control module to each of other nodes, and this state information is relevant with the output link of this node.
2. network as claimed in claim 1, wherein, the network control module of one of node is determined the grouping route based on the state information about the output link of another node.
3. network as claimed in claim 1, wherein, the network control module of one of node is determined the grouping route based in change, network topology and the atmospheric condition of node/Link State at least one.
4. network as claimed in claim 1 also comprises the call wire channel, is configured to provide the visit of the node of network-external to this network.
5. network as claimed in claim 1, wherein, the node control module of one of node is based in Link State, grouping destination and the service quality QoS requirements at least one, the grouping route between the terminal of Control Node.
6. network as claimed in claim 1, wherein, the network control module of one of node is delivered to routing table the switching platform control module of this node by the node control module of this node.
7. network as claimed in claim 1, wherein, one of node comprises the QoS module that is used to specify service quality QoS, and wherein, the network control module of this node upgrades the QoS module when the node/Link State of another node changes.
8. network as claimed in claim 1, wherein, network control module is carried out the more interconnection of new node and at least one in the renewal network routing table.
9. network as claimed in claim 8, wherein, network control module is carried out renewal based on the history of output link bandwidth.
10. network as claimed in claim 1, wherein, the switching platform control module is based on the signal to noise ratio snr characteristic of link and at least one among the bit error rate BER, handoff links transfer rate.
11. a machine readable media that uses with the processor with memory, this machine readable media comprises:
Make the network control module of the first node of processor configuration network determine the instruction of the grouping route of spanning network;
The node control module that makes processor dispose first node is controlled the instruction of the grouping route in the first node; With
The switching platform control module that makes processor dispose first node is carried out the instruction of following operation:
Control is gone to and from the switching of the grouping of first node; And
Provide state information by node control module and network control module to the Section Point of network, this state information is relevant with the output link of first node.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/868,565 | 2004-06-14 | ||
| US10/868,565 US7995489B2 (en) | 2004-06-14 | 2004-06-14 | Topology and quality of service management apparatus and methods for communication networks |
Related Parent Applications (1)
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| CN2005800275060A Division CN101006690B (en) | 2004-06-14 | 2005-06-08 | Topology and quality of service management apparatus and methods for communication networks |
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| Publication Number | Publication Date |
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| CN101686203A true CN101686203A (en) | 2010-03-31 |
| CN101686203B CN101686203B (en) | 2013-10-23 |
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| CN200910205189.7A Active CN101686204B (en) | 2004-06-14 | 2005-06-08 | Method of controlling communication in a network of nodes |
| CN200910205188.2A Active CN101686203B (en) | 2004-06-14 | 2005-06-08 | Method of managing network having plurality of nodes |
| CN2005800275060A Active CN101006690B (en) | 2004-06-14 | 2005-06-08 | Topology and quality of service management apparatus and methods for communication networks |
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| US20040203435A1 (en) * | 2002-10-29 | 2004-10-14 | Karlquist Richard K. | Mapping and discovering peer-to-peer wireless networks |
| CN1207872C (en) * | 2003-07-22 | 2005-06-22 | 中国科学院计算技术研究所 | Method of ensuring track searching reliability in radio self organized network |
| CN1222180C (en) * | 2003-09-15 | 2005-10-05 | 清华大学 | Method for constructing stabilized self-adaption self-organization network terminal |
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| CN101006690B (en) | 2012-08-22 |
| JP2008503161A (en) | 2008-01-31 |
| EP1757048A1 (en) | 2007-02-28 |
| US7995489B2 (en) | 2011-08-09 |
| CN101686204A (en) | 2010-03-31 |
| CN101686459B (en) | 2013-03-13 |
| JP4717069B2 (en) | 2011-07-06 |
| CN101686204B (en) | 2013-06-12 |
| CN101006690A (en) | 2007-07-25 |
| CN101686459A (en) | 2010-03-31 |
| CN101686203B (en) | 2013-10-23 |
| EP1757048B1 (en) | 2011-10-19 |
| WO2005125129A1 (en) | 2005-12-29 |
| US20050276231A1 (en) | 2005-12-15 |
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